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Original title:
Effect of elevated CO2 concentration and nitrogen nutrition on mais response to short-term high temperature and drought stress
Authors: Simor, J. ; Klem, Karel
Document type: Papers
Conference/Event: MendelNet 2021, Brno (CZ), 20211110
Year: 2021
Language: eng
Abstract: Within an experiment conducted in open top chambers in which two mais genotypes differing in stay-green trait were cultivated under elevated atmospheric CO2 concentration (EC) in comparison\nwith ambient CO2 concentration (AC), and in two contrast levels of nitrogen nutrition, the effect of acclimation to these factors on photosynthetic performance and water use efficiency, and subsequent response to short-term high temperature and drought stress was studied. Although EC improved water use efficiency, this effect did not alleviate the response to drought stress, and under some combinations of factors even led to a decrease in CO2 assimilation rate under drought stress. Differences in the stay- green trait between genotypes did not have a major effect on the response to high temperature and drought stress. Differences between genotypes were manifested mainly in the interaction with nitrogen nutrition, while in the Korynt genotype, non fertilised variants showed a lower response of CO2 assimilation rate to drought. Slight alleviating effect of higher nitrogen dose was found under EC conditions, while no nitrogen fertilisation rather increased drought resilience under AC conditions.
Keywords: drought stress; elevated carbon dioxide; mais; nitrogen nutrition
Project no.: EF16_019/0000797
Funding provider: GA MŠk
Host item entry: MendelNet 2021: Proceedings of 28th International PhD Students Conference, ISBN 978-80-7509-821-4
Institution: Global Change Research Institute AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0341461
Permalink: http://www.nusl.cz/ntk/nusl-521742
The record appears in these collections:
Research > Institutes ASCR > Global Change Research Institute
Conference materials > Papers
Authors: Simor, J. ; Klem, Karel
Document type: Papers
Conference/Event: MendelNet 2021, Brno (CZ), 20211110
Year: 2021
Language: eng
Abstract: Within an experiment conducted in open top chambers in which two mais genotypes differing in stay-green trait were cultivated under elevated atmospheric CO2 concentration (EC) in comparison\nwith ambient CO2 concentration (AC), and in two contrast levels of nitrogen nutrition, the effect of acclimation to these factors on photosynthetic performance and water use efficiency, and subsequent response to short-term high temperature and drought stress was studied. Although EC improved water use efficiency, this effect did not alleviate the response to drought stress, and under some combinations of factors even led to a decrease in CO2 assimilation rate under drought stress. Differences in the stay- green trait between genotypes did not have a major effect on the response to high temperature and drought stress. Differences between genotypes were manifested mainly in the interaction with nitrogen nutrition, while in the Korynt genotype, non fertilised variants showed a lower response of CO2 assimilation rate to drought. Slight alleviating effect of higher nitrogen dose was found under EC conditions, while no nitrogen fertilisation rather increased drought resilience under AC conditions.
Keywords: drought stress; elevated carbon dioxide; mais; nitrogen nutrition
Project no.: EF16_019/0000797
Funding provider: GA MŠk
Host item entry: MendelNet 2021: Proceedings of 28th International PhD Students Conference, ISBN 978-80-7509-821-4
Institution: Global Change Research Institute AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0341461
Permalink: http://www.nusl.cz/ntk/nusl-521742
The record appears in these collections:
Research > Institutes ASCR > Global Change Research Institute
Conference materials > Papers
Record created 2023-03-28, last modified 2024-04-27